# Service bulletin M1490

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 11028615
- Published by NHTSA: 2026\-02\-06
- Manufacturer's number: M1490
- Manufacturer's date: 2026\-01\-28
- NHTSA component: UNKNOWN OR OTHER; ENGINE; FUEL/PROPULSION SYSTEM; ELECTRICAL SYSTEM; VEHICLE SPEED CONTROL

## NHTSA's summary

SERVICE BULLETIN M1490 \(V 26.3.2\): DIGITAL TECHNICIAN II \- UPDATES AND RELEASE NOTES. PURPOSE: Revision. This bulletin informs dealers that Harley\-Davidson has made a software update to Digital Technician II \(DT II\). DIGITAL TECHNICIAN II \(PART NUMBER: HD\-48650\). Version 26.3.2. Release Date: Week of January 28, 2026. NOTE Software version \(26.3.2\) will need to be manually installed only if current software version of DT II is \(26.0.2\). Refer to bulletin M1713 for instructions. New Features: LiveWire. Changes: Revolution Max and all MY2026 vehicles. NOTE: Digital Technician II \(DT II\) supports additional Harley\-Davidson motorcycle models and model years outside of those listed.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11028615-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11028615-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system, Engine, Fuel system, Throttle and cruise control

## Vehicles listed

- 2016 HARLEY\-DAVIDSON FLD
- 2017 to 2020 HARLEY\-DAVIDSON FLDE
- 2018 to 2019 HARLEY\-DAVIDSON FLFB
- 2025 to 2026 HARLEY\-DAVIDSON FLFB
- 2018 to 2024 HARLEY\-DAVIDSON FLFBS
- 2018 HARLEY\-DAVIDSON FLFBS ANV
- 2018 HARLEY\-DAVIDSON FLFBS ANX
- 2020 HARLEY\-DAVIDSON FLFBSANV
- 2023 HARLEY\-DAVIDSON FLFBSANV
- 2021 HARLEY\-DAVIDSON FLH
- 2017 to 2021 HARLEY\-DAVIDSON FLHC
- 2025 to 2026 HARLEY\-DAVIDSON FLHC
- 2018 to 2024 HARLEY\-DAVIDSON FLHCS
- 2018 to 2023 HARLEY\-DAVIDSON FLHCS ANV
- 2023 HARLEY\-DAVIDSON FLHFB
- 2026 HARLEY\-DAVIDSON FLHLT
- 2026 HARLEY\-DAVIDSON FLHLTSE
- 2016 to 2025 HARLEY\-DAVIDSON FLHP
- 2016 to 2022 HARLEY\-DAVIDSON FLHR
- 2016 HARLEY\-DAVIDSON FLHRC
- 2017 to 2025 HARLEY\-DAVIDSON FLHRXS
- 2019 to 2022 HARLEY\-DAVIDSON FLHT
- 2016 to 2019 HARLEY\-DAVIDSON FLHTCU
- 2016 to 2017 HARLEY\-DAVIDSON FLHTCUL
- 2017 HARLEY\-DAVIDSON FLHTCUTC
- 2016 to 2025 HARLEY\-DAVIDSON FLHTCUTG
- 2018 HARLEY\-DAVIDSON FLHTCUTG ANV
- 2023 HARLEY\-DAVIDSON FLHTCUTGANV
- 2019 to 2022 HARLEY\-DAVIDSON FLHTCUTGSE
- 2016 to 2024 HARLEY\-DAVIDSON FLHTK
- 2018 HARLEY\-DAVIDSON FLHTK ANV
- 2020 to 2023 HARLEY\-DAVIDSON FLHTK SHRINE
- 2023 HARLEY\-DAVIDSON FLHTKANV
- 2016 to 2019 HARLEY\-DAVIDSON FLHTKL
- 2016 to 2021 HARLEY\-DAVIDSON FLHTKSE
- 2018 HARLEY\-DAVIDSON FLHTKSE ANV
- 2016 to 2025 HARLEY\-DAVIDSON FLHTP
- 2016 to 2026 HARLEY\-DAVIDSON FLHX
- 2018 HARLEY\-DAVIDSON FLHX ANV
- 2018 HARLEY\-DAVIDSON FLHX ANX
- 2026 HARLEY\-DAVIDSON FLHXL
- 2026 HARLEY\-DAVIDSON FLHXLSE
- 2016 to 2023 HARLEY\-DAVIDSON FLHXS
- 2023 HARLEY\-DAVIDSON FLHXSANV
- 2016 to 2026 HARLEY\-DAVIDSON FLHXSE
- 2022 to 2023 HARLEY\-DAVIDSON FLHXST
- 2026 HARLEY\-DAVIDSON FLHXSTSE
- 2025 HARLEY\-DAVIDSON FLHXU
- 2024 HARLEY\-DAVIDSON FLI
- 2016 to 2025 HARLEY\-DAVIDSON FLRT
- 2017 HARLEY\-DAVIDSON FLS
- 2016 HARLEY\-DAVIDSON FLS103
- 2018 to 2022 HARLEY\-DAVIDSON FLSB
- 2024 HARLEY\-DAVIDSON FLSB
- 2018 to 2021 HARLEY\-DAVIDSON FLSL
- 2016 to 2017 HARLEY\-DAVIDSON FLSS
- 2016 to 2017 HARLEY\-DAVIDSON FLSTC
- 2016 to 2017 HARLEY\-DAVIDSON FLSTF
- 2016 to 2017 HARLEY\-DAVIDSON FLSTFB
- 2016 to 2017 HARLEY\-DAVIDSON FLSTFBS
- 2025 HARLEY\-DAVIDSON FLSTFI
- 2016 to 2017 HARLEY\-DAVIDSON FLSTN
- 2020 to 2024 HARLEY\-DAVIDSON FLTRK
- 2022 HARLEY\-DAVIDSON FLTRKSE
- 2023 HARLEY\-DAVIDSON FLTRKSE ANV
- 2023 to 2026 HARLEY\-DAVIDSON FLTRT
- 2016 to 2019 HARLEY\-DAVIDSON FLTRU
- 2016 HARLEY\-DAVIDSON FLTRUSE
- 2016 to 2026 HARLEY\-DAVIDSON FLTRX
- 2026 HARLEY\-DAVIDSON FLTRXL
- 2024 to 2026 HARLEY\-DAVIDSON FLTRXP
- 2025 HARLEY\-DAVIDSON FLTRXRRSE
- 2016 to 2023 HARLEY\-DAVIDSON FLTRXS
- 2023 HARLEY\-DAVIDSON FLTRXSANV
- 2018 to 2025 HARLEY\-DAVIDSON FLTRXSE
- 2022 to 2023 HARLEY\-DAVIDSON FLTRXST
- 2023 to 2026 HARLEY\-DAVIDSON FLTRXSTSE
- 2018 to 2020 HARLEY\-DAVIDSON FXBB
- 2025 to 2026 HARLEY\-DAVIDSON FXBB
- 2021 to 2024 HARLEY\-DAVIDSON FXBBS
- 2018 to 2019 HARLEY\-DAVIDSON FXBR
- 2023 to 2026 HARLEY\-DAVIDSON FXBR
- 2018 to 2020 HARLEY\-DAVIDSON FXBRS
- 2022 to 2023 HARLEY\-DAVIDSON FXBRS
- 2018 HARLEY\-DAVIDSON FXBRS ANX
- 2016 to 2018 HARLEY\-DAVIDSON FXDB
- 2016 HARLEY\-DAVIDSON FXDBC 103
- 2016 to 2017 HARLEY\-DAVIDSON FXDBP 103
- 2016 to 2017 HARLEY\-DAVIDSON FXDF
- 2016 to 2017 HARLEY\-DAVIDSON FXDL
- 2016 to 2017 HARLEY\-DAVIDSON FXDLS
- 2019 to 2020 HARLEY\-DAVIDSON FXDRS
- 2016 to 2017 HARLEY\-DAVIDSON FXDWG
- 2018 to 2019 HARLEY\-DAVIDSON FXFB
- 2018 to 2024 HARLEY\-DAVIDSON FXFBS
- 2018 to 2020 HARLEY\-DAVIDSON FXLR
- 2020 to 2026 HARLEY\-DAVIDSON FXLRS
- 2022 to 2026 HARLEY\-DAVIDSON FXLRST
- 2022 HARLEY\-DAVIDSON FXRST
- 2016 to 2018 HARLEY\-DAVIDSON FXSB
- 2016 to 2017 HARLEY\-DAVIDSON FXSE
- 2020 to 2024 HARLEY\-DAVIDSON FXST
- 2021 to 2024 HARLEY\-DAVIDSON RA1250
- 2026 HARLEY\-DAVIDSON RA1250L
- 2021 to 2026 HARLEY\-DAVIDSON RA1250S
- 2024 to 2025 HARLEY\-DAVIDSON RA1250SE
- 2025 to 2026 HARLEY\-DAVIDSON RA1250ST
- 2022 HARLEY\-DAVIDSON RA975
- 2022 HARLEY\-DAVIDSON RA975S
- 2021 to 2026 HARLEY\-DAVIDSON RH1250S
- 2022 to 2026 HARLEY\-DAVIDSON RH975
- 2023 to 2026 HARLEY\-DAVIDSON RH975S
- 2016 to 2017 HARLEY\-DAVIDSON VRSCDX
- 2016 to 2017 HARLEY\-DAVIDSON VRSCF
- 2016 to 2020 HARLEY\-DAVIDSON XG500
- 2016 to 2020 HARLEY\-DAVIDSON XG750
- 2017 to 2020 HARLEY\-DAVIDSON XG750A
- 2016 to 2020 HARLEY\-DAVIDSON XL1200C
- 2016 to 2021 HARLEY\-DAVIDSON XL1200CX
- 2018 to 2021 HARLEY\-DAVIDSON XL1200NS
- 2016 to 2017 HARLEY\-DAVIDSON XL1200T
- 2020 HARLEY\-DAVIDSON XL1200T
- 2016 HARLEY\-DAVIDSON XL1200V
- 2016 to 2022 HARLEY\-DAVIDSON XL1200X
- 2018 HARLEY\-DAVIDSON XL1200X ANX
- 2018 to 2020 HARLEY\-DAVIDSON XL1200XS
- 2016 to 2021 HARLEY\-DAVIDSON XL883L
- 2016 to 2022 HARLEY\-DAVIDSON XL883N

JSON: [/v1/bulletins/11028615](/v1/bulletins/11028615)

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